I think this is neat. If I may ask, why is everything purple? Not that it's wrong.

The land is simply naturally purple. As a result, the plants are purple. The plants and the Perrajep(which also turned the oceans purple) made the atmosphere purple. As the Perrachi evolved, their purple coloring was either left over from their ancestors or used for camouflage. And thank you very much, Summoner.

EDIT: This explanation is no longer true. See the revised explanation below.

I think this is neat. If I may ask, why is everything purple? Not that it's wrong.

The land is simply naturally purple. As a result, the plants are purple. The plants and the Perrajep(which also turned the oceans purple) made the atmosphere purple. As the Perrachi evolved, their purple coloring was either left over from their ancestors or used for camouflage. And thank you very much, Summoner.

The plants might be purple due to their star giving off more non-purple light than anything else, thus resulting in not green but purple, as color is simply the reflected light, which is not absorbed. Perhaps the atmosphere is composed mostly of some purple gas that the Perrachi breath. Their coloring could also be camouflauge to fit in with the plants which would have existed both in the ocean, and before the Perrachi did. It makes more general sense, in my opinion, but your story is your story UFO King.

EDIT: Oh yeah, the purple atmosphere might be a result of higher levels of Xenon, which glows brightly purple when there's an electrical current, so the Perrachi homeworld would also be very electrically active. But that's just one explanation.

I knew that UFO King would like the science-y stuff. We're both* really big on scientific explanations that are logical and creative.*I refer to UFO King and I as a collective because we're roommates. Just in case somebody didn't know.